Will an RX7 starter fit and work on an RX3 I cant see why not Bob

 

yes for side mount but not sure if a RX-7 will work on top mount

 

Top mount is way different.

If side mount, '74-'92 NA starter is possible. Maybe clean some casting flash out of the hole like I did on a '74 ribcase bellhousing. It fits an FC NA starter perfectly with 4mm to spare in the MG.

 

Here are some pics for you to digest.

top mount starter tranny


top mount starter bellhousing


lower side mount bellhousing


closeup of the casting flash removal to allow an NA FC starter to fit.


Which tranny do you have?